Apparatus for melting glue



(No Model.)

M. F. BINGHAM.

APPARATUS FOR MBLTING GLUE Patented Oct. 15, 1889.

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N. PETERS, Pholw'liihugwhaf, Washingwn D c PATENT OFF-ICE.

f APPARATUS FOR NilE LTlNG GLu E.

Steel-mum Y ment in Apparatus for Melting Glue, of which the following is a specification.

This invention relates to apparatus to be used in melting or reducing to'a' fluid condition the glue used in printers rollers, and more especially for use in the practice of the process of preparing the glue for the casting operation set forth in a companion application filed herewith.

The apparatus consists of asteam-chamber, and is formed of a covered outer cylinder, an interior perforated partition, preferably in the form of an inner cylinder, a steam-space being formed between the two, and a steaminlet, in combination with open-work trays for the glue, adapted to be suspended in the chamber. These and other features of the invention will be fully understood from the following description and the accompanying drawings, in which- Figure 1 is a central vertical section of the apparatus; and Fig. 2, asection upon the line 2 2 of Fig. 1, the glue-holding trays being omitted. Fig. 3 is a plan of one of the glueholding trays.

In said drawings,Arepresents the exterior cylinder, forming a steam-chamber, in which the glue is liquefied.

B is an interior partition or cylinder, perforated at b, for diifusing the steam.

O is a pipe admitting steam to the space 0 between the two cylinders.

D is a cover whichrests upon the circular rod d, running around the upper edge of the cylinder A. The interior of the chamber is provided with metal straps E, resting upon the interior ledge e and sustaining the perforated glue screens or trays, of which there 'may be one or a series placed one above the other. The glue trays or screens, which are indicated by Rare preferably formed of wire cloth throughout, stiffened at their top edges by a wire f; but they may be made of perfora-ted metal or other material. They should preferably give as free access by the steam to the glue as possible, to the end that all portions of the latter may be speedily af= forming part of Letters Patent No. 412,720, dated October 15,1889. Application filed March 8,1889- Serial No. 302509. (No'niodeL) fected' The steam taken in at the inlet 0 passes to the interior of the chamber throughthe perforations b of the partition B and quickly fills the entire chamber, thus gaining access to the glue at the top, bottom, and sides of each of the trays. That portion of the partition opposite the steam-inlet is preferably not perforated, as shown at G, the object of such feature being to prevent direct access by the steam to the glue before it has been deprived of the projecting force with which it passes out of the inlet. It is thus caused to difiuse itself through the space 0 and to gently permeate the chamber without being forcibly blown thereinto, avoiding injury by overmoistening of any portion of the glue, upon the one hand, and producing a uniform condition throughout the mass, upon the other hand. By providing the chamber with this interior perforated cylinder or partition an other useful result is obtained, in that much of the water of condensation is prevented from passing into and mixing with the glue, wherebyl avoid overmoistening; and the water of condensation thus excluded falls down to the bottom of the space a, and is conducted therefrom by the drain-pipe h. As the glue liquefies it drops from the trays and is caught by the funnel-shaped bottom H, by which it is conducted into any appropriate receiver. This bottom, being open, allows the steam as it becomes cooled to pass out and give way to fresh hot steam from the inlet, thus avoiding much of the condensation which would otherwise take place and become mixed with glue, while the heat is kept up to an effective point during the whole operation. The glue may be placed in the perforated trays to the depth of four inches, or any depth which will not prevent the active operation of the steam upon all the mass or interfere with the flowing 01f of the fused portions. The chamber may be strengthened by the bands J, and the trays may rest upon each other or be independently supported, as preferred. By the use of this apparatus the fusing of the glue is very much quickened from the old method and the glue is not injured by longcontinued heating.

I claim- 1. The apparatus for melting glue, consistin g of the covered steam-chamber A, having an interior perforated partition for glifusing the e m, nd aet emet n leembieefiei with open-work trays for the glue, adapted to be suspended in said chamber, substantially as set forth.

The pp s fer melt n lee, eene et ing of the covered'cylinder Afan inner perforated cylinder 13, the two forming a steamspace 0, and a steam-inlet, i eo nbinatigg l with open-work trays 'for ho ding the glue, adapted to be suspended within the inner cylinder, eu s a t al y as set forth.

3. The apparatus for melting glue, consistf in g of the covered chamber'A,'liai'iiig a fi ailiinlet, and means for diffusing and breaking p the current of he rate/am, in eem netiet t- 01mm more ra s er eeln th 5%? nd adapte to be seepemled in are chamer, rsubs antially se ten];-

ft. The apparatus tor melting gh eppnsist- 7 ing of a covere phembe were a eteemr'ni let and provision iorpatellingthe gnelteg ,',e i as it drops from the trays; in ,pnelgineltio n with open-work treye, in which I in the steam is be suspended in said chamber, as set forth.

5. Tee a p t te f r melti lee e m o elite-her t t m at t e te P manently op'enat the bot om, and having a steam-inlet, in combination with one or more 30 trays; in which the glue may be suspended in eerie chamber eubsteetiel y a set forth.

' 6. The domination," with the chamber A and its steam-inlet, of an interior partition ior Qifinsing 53nd breaking up the current of 3 5 steam, suchpartition being perforated except in that portion opposite the inlet, and ftrag ls ta 1. 9. 'n the 1 estate ntiallyeee t Orb 7L 'fll l i iooinbgnatiomn ah the chamber A an steamrinlelg'ofi the inner perforated o cylinder B, the two forming theqlspace c,whe] ?re- .emee the hem. r me its sw ets hr .1 we the ma ,e-mn

tor er were 9;? water of 99 X preteen free we, were e am o lwl g the 45 gee .ee re; tertli 

